Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum
The optical properties (transmission and emission) for GaxSe85 – xTe15(x 0, 2, 6, 10, 15) semiconductor were studied using UV Visible spectra and PL Spectra of thermally evaporated thin films. Optical band gap is found to be decreasing with increased Ga-content in the compositions. Increase in ref...
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Sumy State University
2016-10-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2016/3/articles/Proof_jnep_2016_V8_03019.pdf |
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| author | Neeru Chaudhary S.K. Tripathi Navdeep Goyal |
| author_facet | Neeru Chaudhary S.K. Tripathi Navdeep Goyal |
| author_sort | Neeru Chaudhary |
| collection | DOAJ |
| description | The optical properties (transmission and emission) for GaxSe85 – xTe15(x 0, 2, 6, 10, 15) semiconductor were studied using UV Visible spectra and PL Spectra of thermally evaporated thin films. Optical band gap is found to be decreasing with increased Ga-content in the compositions. Increase in refractive index, dielectric constants and absorption coefficient is observed in the wavelength region 550-850 nm.The fall in the optical band gap is explained with chemical bond approach and electro negativity. The increase in refractive index (n) is interpreted in association to the mean coordination number and cohesive energy. Direct band gap is found to be allowed in these thin films. |
| format | Article |
| id | doaj-art-d5f2b727a7e24f7ba2bd5abc11deb873 |
| institution | OA Journals |
| issn | 2077-6772 |
| language | English |
| publishDate | 2016-10-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-d5f2b727a7e24f7ba2bd5abc11deb8732025-08-20T02:04:07ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722016-10-018303019-103019-510.21272/jnep.8(3).03019Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible SpectrumNeeru Chaudhary0S.K. Tripathi1Navdeep Goyal2Department of Physics, Punjab University, 160014 Chandigarh, IndiaDepartment of Physics, Punjab University, 160014 Chandigarh, IndiaDepartment of Physics, Punjab University, 160014 Chandigarh, IndiaThe optical properties (transmission and emission) for GaxSe85 – xTe15(x 0, 2, 6, 10, 15) semiconductor were studied using UV Visible spectra and PL Spectra of thermally evaporated thin films. Optical band gap is found to be decreasing with increased Ga-content in the compositions. Increase in refractive index, dielectric constants and absorption coefficient is observed in the wavelength region 550-850 nm.The fall in the optical band gap is explained with chemical bond approach and electro negativity. The increase in refractive index (n) is interpreted in association to the mean coordination number and cohesive energy. Direct band gap is found to be allowed in these thin films.http://jnep.sumdu.edu.ua/download/numbers/2016/3/articles/Proof_jnep_2016_V8_03019.pdfOptical constantsOptical band gapSemiconductorsCoordination numberCohesive energyElectronegativit |
| spellingShingle | Neeru Chaudhary S.K. Tripathi Navdeep Goyal Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum Журнал нано- та електронної фізики Optical constants Optical band gap Semiconductors Coordination number Cohesive energy Electronegativit |
| title | Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum |
| title_full | Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum |
| title_fullStr | Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum |
| title_full_unstemmed | Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum |
| title_short | Optical Coefficients and PL Spectra with Variation in Ga-content in GaSeTe Thin Films: Visible Spectrum |
| title_sort | optical coefficients and pl spectra with variation in ga content in gasete thin films visible spectrum |
| topic | Optical constants Optical band gap Semiconductors Coordination number Cohesive energy Electronegativit |
| url | http://jnep.sumdu.edu.ua/download/numbers/2016/3/articles/Proof_jnep_2016_V8_03019.pdf |
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